The selection of international standards for the thermodynamic properties of HFC-134a and HCFC-123
The objectives and activities of the International Energy Agency - Annex 18 are summarized. One of the goals of the Annex was to determine the formulations that best represent the thermodynamic properties of HFC-134a and HCFC-123. The formulations selected were those which accurately represented the...
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| Veröffentlicht in: | International Journal of Thermophysics 1995-05, Vol.16 (3), p.781-790 |
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| container_title | International Journal of Thermophysics |
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| creator | PENONCELLO, S. G JACOBSEN, R. T DE REUCK, K. M ELHASSAN, A. E WILLIAMS, R. C LEMMON, E. W |
| description | The objectives and activities of the International Energy Agency - Annex 18 are summarized. One of the goals of the Annex was to determine the formulations that best represent the thermodynamic properties of HFC-134a and HCFC-123. The formulations selected were those which accurately represented the experimental data and simultaneously exhibited thermodynamic consistency. Methods of comparison include analysis of the experimental data, statistical comparisons of values calculated from the property formulations to experimental values, and graphical analyses of the thermodynamic surface. The analytical methods used are summarized in this paper. The equations of state reviewed in these comparisons represented the most accurate formulations available in December 1992. Four equations of state were reviewed for HFC-134a and three equations of state were considered for HCFC-123. These equations represented the work of independent researchers in Germany, Japan, and the United States. The formulations selected as international standards are presented. |
| doi_str_mv | 10.1007/BF01438863 |
| format | Article |
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The equations of state reviewed in these comparisons represented the most accurate formulations available in December 1992. Four equations of state were reviewed for HFC-134a and three equations of state were considered for HCFC-123. These equations represented the work of independent researchers in Germany, Japan, and the United States. The formulations selected as international standards are presented.</description><identifier>ISSN: 0195-928X</identifier><identifier>EISSN: 1572-9567</identifier><identifier>DOI: 10.1007/BF01438863</identifier><identifier>CODEN: IJTHDY</identifier><language>eng</language><publisher>New York, NY: Springer</publisher><subject>40 CHEMISTRY ; Applied sciences ; Energy ; Energy. Thermal use of fuels ; EQUATIONS OF STATE ; Equations of state of gases ; Exact sciences and technology ; EXPERIMENTAL DATA ; Fluorocarbons ; Graphic methods ; INTERNATIONAL ENERGY AGENCY ; Numerical methods ; REFRIGERANTS ; Refrigerating engineering ; Refrigerating engineering. 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Methods of comparison include analysis of the experimental data, statistical comparisons of values calculated from the property formulations to experimental values, and graphical analyses of the thermodynamic surface. The analytical methods used are summarized in this paper. The equations of state reviewed in these comparisons represented the most accurate formulations available in December 1992. Four equations of state were reviewed for HFC-134a and three equations of state were considered for HCFC-123. These equations represented the work of independent researchers in Germany, Japan, and the United States. The formulations selected as international standards are presented.</description><subject>40 CHEMISTRY</subject><subject>Applied sciences</subject><subject>Energy</subject><subject>Energy. 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Thermal use of fuels</topic><topic>EQUATIONS OF STATE</topic><topic>Equations of state of gases</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>Fluorocarbons</topic><topic>Graphic methods</topic><topic>INTERNATIONAL ENERGY AGENCY</topic><topic>Numerical methods</topic><topic>REFRIGERANTS</topic><topic>Refrigerating engineering</topic><topic>Refrigerating engineering. Cryogenics. Food conservation</topic><topic>Statistical methods</topic><topic>THERMODYNAMIC PROPERTIES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>PENONCELLO, S. G</creatorcontrib><creatorcontrib>JACOBSEN, R. T</creatorcontrib><creatorcontrib>DE REUCK, K. M</creatorcontrib><creatorcontrib>ELHASSAN, A. E</creatorcontrib><creatorcontrib>WILLIAMS, R. C</creatorcontrib><creatorcontrib>LEMMON, E. 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| subjects | 40 CHEMISTRY Applied sciences Energy Energy. Thermal use of fuels EQUATIONS OF STATE Equations of state of gases Exact sciences and technology EXPERIMENTAL DATA Fluorocarbons Graphic methods INTERNATIONAL ENERGY AGENCY Numerical methods REFRIGERANTS Refrigerating engineering Refrigerating engineering. Cryogenics. Food conservation Statistical methods THERMODYNAMIC PROPERTIES |
| title | The selection of international standards for the thermodynamic properties of HFC-134a and HCFC-123 |
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